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Browse Prior Art Database

Compact Continuity Tester for Testing Cables and Modules

IP.com Disclosure Number: IPCOM000110285D
Original Publication Date: 1992-Nov-01
Included in the Prior Art Database: 2005-Mar-25
Document File: 2 page(s) / 66K

Publishing Venue

IBM

Related People

Seing, HS: AUTHOR

Abstract

Described is a hardware implementation for a compact continuity tester for testing cables and tape head read/write modules. The tester is designed to operate in conjunction with a microcomputer.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 68% of the total text.

Compact Continuity Tester for Testing Cables and Modules

       Described is a hardware implementation for a compact
continuity tester for testing cables and tape head read/write
modules.  The tester is designed to operate in conjunction with a
microcomputer.

      The compact continuity tester, measuring 10" high x 22" long x
14" wide, is designed to fit into a commercial slope front turret so
as to minimize the space required to perform the testing operations.
The tester is connected to a microcomputer which has a basic
interpreter for the development of application programs.  The tester
utilizes eighty programmable input/output (I/O) points where
seventy-two termination points are connected to the cable and tape
head read/ write modules.  An analysis is performed of the circuitry
that permits the grouping of signal points into four separate
sections.

      The figure shows thirty-eight connections; two OUT connections
and thirty-six IN connections which connect the input/output ports to
the cable module.  There is an equivalent of ten ohms of resistance
inside the tape head read/write module between each IN1 and IN2, IN2
and IN3 through IN35 and IN36.  The testing procedure algorithm is as
follows:
  1.  Press START switch to provide power to the tester and start the
test cycle.
  2.  Turn OUT1 and OUT2 OFF, and test each input for HIGH. "HIGH".
  3.  Turn OUT1 ON, and test each input for LOW.
  4.  Turn OUT1 and OUT2 OFF, and test each input...